A giant periodic flare from the soft gamma-ray repeater SGR1900+14
Article Abstract:
The four known soft gamma-ray repeaters (SGRs) seem to be associated with radio supernova remnants, suggesting that they are young. A quiescent soft x-ray source has been determined that could be the neutron start SGR1900+14, first identified in 1979. SGR1900+14 was shown to emerge from a long dormant phase in May 1998, and it emitted an intense giant flare in August. This event was characterized by hard gamma-rays and may have been induced by a major disruption of the neutron star's crust.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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A new gamma-ray burst classification scheme from GRB 060614
Article Abstract:
Gamma-ray bursts (GRBs) are known to come in two duration classes, namely, long duration bursts that originate from star-forming regions in galaxies and short duration bursts that originate in regions within their host galaxies that have lower-star formation rates. It is reported that the bright GRB060614 gamma-ray burst does not fit into either class and is one probably one of the first-established members of an emerging class of events that includes both short- and long-duration GRBs.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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